EP2558153B2 - Abschirmvorrichtung für eine polymerkatheter-nadelspitze - Google Patents

Abschirmvorrichtung für eine polymerkatheter-nadelspitze

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Publication number
EP2558153B2
EP2558153B2 EP11769171.7A EP11769171A EP2558153B2 EP 2558153 B2 EP2558153 B2 EP 2558153B2 EP 11769171 A EP11769171 A EP 11769171A EP 2558153 B2 EP2558153 B2 EP 2558153B2
Authority
EP
European Patent Office
Prior art keywords
needle
needle tip
shielding device
catheter
tip shielding
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP11769171.7A
Other languages
English (en)
French (fr)
Other versions
EP2558153A1 (de
EP2558153B1 (de
EP2558153A4 (de
Inventor
Per Knutsson
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
GREINER BIO-ONE GmbH
Original Assignee
Greiner Bio-One GmbH
Greiner Bio One GmbH Germany
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
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Application filed by Greiner Bio-One GmbH, Greiner Bio One GmbH Germany filed Critical Greiner Bio-One GmbH
Publication of EP2558153A1 publication Critical patent/EP2558153A1/de
Publication of EP2558153A4 publication Critical patent/EP2558153A4/de
Application granted granted Critical
Publication of EP2558153B1 publication Critical patent/EP2558153B1/de
Publication of EP2558153B2 publication Critical patent/EP2558153B2/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178—Syringes
    • A61M5/31—Details
    • A61M5/32—Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
    • A61M5/3205—Apparatus for removing or disposing of used needles or syringes, e.g. containers; Means for protection against accidental injuries from used needles
    • A61M5/321—Means for protection against accidental injuries by used needles
    • A61M5/3243—Means for protection against accidental injuries by used needles being axially-extensible, e.g. protective sleeves coaxially slidable on the syringe barrel
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M25/00—Catheters; Hollow probes
    • A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
    • A61M25/06—Body-piercing guide needles or the like
    • A61M25/0612—Devices for protecting the needle; Devices to help insertion of the needle, e.g. wings or holders
    • A61M25/0618—Devices for protecting the needle; Devices to help insertion of the needle, e.g. wings or holders having means for protecting only the distal tip of the needle, e.g. a needle guard
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M25/00—Catheters; Hollow probes
    • A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
    • A61M25/06—Body-piercing guide needles or the like
    • A61M25/0612—Devices for protecting the needle; Devices to help insertion of the needle, e.g. wings or holders
    • A61M25/0631—Devices for protecting the needle; Devices to help insertion of the needle, e.g. wings or holders having means for fully covering the needle after its withdrawal, e.g. needle being withdrawn inside the handle or a cover being advanced over the needle
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M25/00—Catheters; Hollow probes
    • A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
    • A61M25/06—Body-piercing guide needles or the like
    • A61M25/0606—"Over-the-needle" catheter assemblies, e.g. I.V. catheters
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178—Syringes
    • A61M5/31—Details
    • A61M5/32—Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
    • A61M5/3205—Apparatus for removing or disposing of used needles or syringes, e.g. containers; Means for protection against accidental injuries from used needles
    • A61M5/321—Means for protection against accidental injuries by used needles
    • A61M5/3243—Means for protection against accidental injuries by used needles being axially-extensible, e.g. protective sleeves coaxially slidable on the syringe barrel
    • A61M5/3273—Means for protection against accidental injuries by used needles being axially-extensible, e.g. protective sleeves coaxially slidable on the syringe barrel freely sliding on needle shaft without connection to syringe or needle

Definitions

  • An unprotected released needle constitutes, however, a serious health hazard due to the fact that it may be contaminated with e.g. infectious agents originating from the patient's blood or other body fluids, in combination with the needle tip's inherent ability to easily penetrate skin. Hence, the medical personnel who are handling the released needle may acquire the corresponding disease, e.g. HIV or hepatitis, if by accident contacting it with their skin.
  • a released needle tip protectors In order to circumvent or alleviate the health hazards associated with such a released needle amongst other things, there has been much effort devoted to the development of various kinds of needle tip protectors with a special focus on automatic variants of a type which may be referred to as being "foolproof'.
  • protectors may be divided into two main categories, metallic or polymeric. Advantages of polymeric or plastic needle tip protectors, in comparison to metallic ones, include reduced noise or scraping vibrations as the needle is withdrawn from the catheter. In addition, they may be produced by e.g. molding, which offers greater design opportunities.
  • the protector is mounted so that it is contacting a part of the medical device which may communicate with e.g. a vein of a patient, it is desirable to avoid the inclusion of sharp edges and the like in the design of the protector. Such edges or similar shapes may result in scrapings and release of particles or flakes which represents a health hazard to the patient. Thus, it is desirable to design the protector such that only smooth shapes of it is contacting critical parts of the medical device, such as the inside of a catheter hub.
  • the attraction effect may even adventure the intended function of the protector if relying on e.g. an automatic release of a part of the protector, such as a spring biased arm or the like, from a part of the medical device, such as the interior of the catheter hub.
  • the function of the needle tip guards described in GB2451153A and US5135504A relies on the presence of one or several obstructions, e.g. protuberances or grooves, of the inside of the catheter hub for keeping the guards at place there until the needle is withdrawn from the hub.
  • obstructions e.g. protuberances or grooves
  • Disadvantages of the need of such obstructions include the need to use specially designed catheter hubs which are more expensive and difficult to produce in comparison to simpler standard catheter hubs.
  • nowhere in GB2451153A or US5135504A is the attraction effect, or a corresponding phenomenon, mentioned. It can therefore not be ruled out that one or several of the guards described therein has been designed without taking this effect into account and, hence, that the function and/or safety of the corresponding guard may be compromised due to this.
  • the first polymeric material is a polymer being different from the second polymeric material
  • the second polymeric material may comprise at least one polymer produced from substituted or unsubstituted ethene by a polymerization reaction in which the double bond of said ethane is converted to a single bond
  • the needle tip shielding device comprises a resilient biasing portion having a first position and a second position, the first position being characterized by the resilient biasing portion abutting the needle shaft of the hollow needle in the ready position, and the second position being characterized by the resilient biasing portion shielding the needle tip in the fully retracted position.
  • the stopping member comprises at least one friction element, or a foldable string or stripe connected at its distal end to the needle tip shielding device and connected at its proximal end to a needle unit, the length of the foldable string or stripe being less than the length of the needle.
  • a polymeric needle tip shielding device for assembly in the catheter instrument, comprising a hole and a resilient arm extending from an attachment point; wherein the resilient arm has a resting state from which it may be forced to yield free passage through the hole in an axial direction, the resilient arm together with a back-hooking elongation thereof having an L-shaped form for protecting a needle tip of a hollow needle extending through the hole; any straight imaginary line extending longitudinally through the hole in the axial direction coincides with a point on the surface of the resilient arm in between the attachment point and an inner corner in the L-shaped form of the resilient arm, when the resilient arm is in the resting state; the any straight imaginary line coincides with a point on the surface of the back-hooking elongation, or with a point on the surface in between the attachment point and the corner, when the resilient arm is protecting the needle tip from accidental contact in cooperation with the back-hooking elongation; and the resilient arm or the back-hooking elong
  • the needle tip shielding device is made of a thermoplastic polymer comprising covalently bonded O or S atoms.
  • the needle 303 is preferably a hollow needle 303, but may also be other types of needles, e.g. a solid needle or the like.
  • the needle tip shielding device 100 comprise means for protecting the needle tip 304 of the hollow needle 303 when it is withdrawn from the catheter unit, i.e. in the fully retracted position, whereby the protecting function of the needle tip shielding device 100 is activated.
  • These means may, however, allow the hollow needle 303 to slide back and forth inside the catheter unit when the protecting function is not activated, such as in the ready position (the ready mode), to essentially allow a user to withdraw the hollow needle 303 after insertion of a catheter 201 of the catheter instrument 1000.
  • these means comprise a resilient biasing portion which in a first position, which corresponds to e.g. the ready position of the catheter instrument 1000, abut the shaft of the hollow needle 303.
  • this resilient biasing portion prevents the hollow needle 303 to be pushed forward relative the needle tip shielding device 100 and simultaneously shields the needle tip 303 from accidental contact.
  • Additional suitable non-resilient means include, for example, arms or the like which are forced into the second position by springs, o-rings or the like, as known in the art.
  • Means for detachably attaching the needle tip shielding device 100 inside the catheter hub 200 include, for example, at least one protuberance 101 located on a surface, such as an outer surface 108, which is in contact with the inner surface of the catheter hub 200.
  • Such protuberance 101 may make an imprint in the inner surface of the catheter hub 200.
  • the inner surface of the catheter hub 200 may be provided with at least one protuberance which makes an imprint in the contacting surface of the needle tip shielding device 100.
  • Other means include attachment by friction.
  • the inner surface of the catheter hub 200 and/or the contacting surface of the needle tip shielding device 100 are then provided with a suitable roughness, as known in the art, for control of the force needed to detach the needle tip shielding device 100 from the catheter hub 200.
  • the needle tip shielding device 100 may also be provided with slits 111 suitably shaped as known in the art to allow compression of the part of the needle tip shielding device 100 which is contacting an inner surface of the catheter unit, such as the inner surface of the catheter hub 200.
  • this part When this part is not compressed, its effective outer diameter is slightly larger than the inner diameter of e.g. the catheter hub 200. When this part is compressed, the effective diameter is equal to or slightly smaller than the inner diameter of e.g. the catheter hub 200.
  • the part is preferably made of a non-fragile polymer with an inherent strive to reach the uncompressed dimensions.
  • the hollow needle 303 engages with the needle tip shielding device 100 by a stop member, i.e. engagement means, so that further backwards movement relative the needle tip shielding device 100 is prevented.
  • the needle tip 304 may thus not be withdrawn past the proximal end of the needle tip shielding device 100.
  • the needle tip 304 is protected by means for protecting the needle tip 304 in this position as described above herein.
  • Additional engagement means include a foldable string or stripe of defined unfolded length fastened at one end to the needle tip shielding device 100, and at the other end to the needle unit 300, as known in the art. As the fully retracted position is reached, the string or stripe is extended to its maximal length, whereby further withdrawal of the hollow needle 303 relative the needle tip shielding device 100 is prevented. Preferably, the length of the foldable string or stripe is less than the length of the needle 303.
  • the needle tip shielding device 100 is disconnected from the catheter unit to allow disposal of the needle unit 300, in which the comprised needle tip 304 is protected from accidental contact. Such withdrawal is preferably achieved with a slight jerk backwards of the needle unit 300.
  • Above described means for detachably attaching the needle tip shielding device 100 inside the catheter hub 200 are preferably adapted, as known in the art, to allow facile disconnection of the needle tip shielding device 100 without compromising the intended function of above described engagement means for engaging the hollow needle 303 with the needle tip shielding device 100.
  • the contacting parts of the needle tip shielding device 100 are hence preferably made of a material different from the material of the corresponding contacting parts of the catheter unit, such as the catheter hub 200.
  • the needle tip shielding device 100 is made of a first polymeric material
  • the catheter hub 200 is made of a second polymeric material.
  • the protuberance 101 may be made of a material with a hardness which is greater that the hardness of the inner surface of the catheter hub 200, in order to effectively accomplish an imprint in the latter.
  • the protuberance 101 is made of the same material as the rest of the needle tip shielding device 100, in order to allow for a facile and economically advantageous production of the same.
  • the type, multiplicity and dimension of protuberance 101 is selected such that no unintentional disconnection of the needle tip shielding device 100 from the catheter hub 200 may occur, yet allowing facile intentional disconnection when the hollow needle 303 is withdrawn.
  • the protuberance 101 may be an annular protuberance extending in a continuous loop around the outer surface 108 with a height in the range of 0.01 to 0.3 mm, such as 0.03 to 0.1 mm, from the same.
  • any part of the needle tip shielding device 100 such as the protuberance 101 or the outer surface 108, which may contact any other part of the catheter instrument 1000, such as the catheter hub 200, is made of a material which is different from the material of the part of the catheter instrument 1000 it may contact.
  • the risk for malfunction of the catheter instrument 1000 due to the attraction effect is thus minimized.
  • the surface of outer surface 108, the protuberance 101, and the contacting surface of the inside of the catheter hub 200 is polished to minimize friction between these surfaces, as known in the art.
  • the outer surface 108 and the protuberance 101 is made of a material, preferably polymeric or plastic, which is different from the material, preferably polymeric or plastic, of the inside of the catheter hub 200.
  • the potential additional factors, such as friction and the attraction effect, which may affect the degree of force needed to release the needle tip shielding device 100 from the catheter hub 200, are thereby reduced.
  • the force needed to release the needle tip shielding device 100 from the catheter hub 200 then becomes mainly dependant on the design and dimensions of the protuberance 101.
  • the reduction of these additional factors allow for production and assembly of a catheter instrument 1000 with decreased variation in the force needed to eject the needle tip shielding device 100, which increases e.g. safety.
  • the inclination of the outer surface 108 of the needle tip shielding device 100 i.e. the angle between lines L1 and L2, is within in the range from 0° to 10°, preferably in the range from 4° to 8°, and even more preferred 6°.
  • the inclination of the outer surface 108 is essentially the same as the inclination of the catheter hub 200 where the needle tip shielding device 100 is mounted when the catheter instrument 1000 is in the ready mode. This maximizes the contact surface between the outer surface 108 and the inside of the catheter hub 200, whereby accidental detachment of the needle tip shielding device 100 from the catheter hub 200 is hindered.
  • the needle tip shielding device 100 is made of a plastic or polymeric material.
  • the plastic or polymeric material has a suitable combination, for its intended purpose, of tenacity, rigidity, fatigue resistance, elasticity, and creep deformation resistance.
  • the selection of a suitable plastic or polymeric material may easily be made by the one skilled in the art.
  • the one skilled in the art may also perform standard experiments in order to screen a range of plastic or polymeric materials, whereby a suitable plastic or polymeric material may be selected on the basis of the results of such experiments.
  • a suitable plastic or polymeric material has a high creep deformation resistance, i.e. it has a low tendency to slowly move or deform permanently under the influence of an applied external pressure.
  • a catheter instrument such as the catheter instrument 1000 of the present invention, comprising a needle tip shielding device 100 with protuberance 101
  • a catheter instrument may be stored in the assembled ready mode for a prolonged time without extensive creep deformation of protuberance 101, which would otherwise make the needle tip shielding device 100 more prone to involuntary disconnection from the catheter hub 200.
  • a suitable plastic or polymeric material has, furthermore, a suitable elasticity and high three-dimensional memory to allow for the resilient arm 103 to retain its resting state and clamp the needle tip 304 even after prolonged storage, during which the resilient arm 103 has been forced out of this state.
  • the tenacity of the plastic or polymeric material is preferably such that the needle tip 304 may penetrate slightly into, but not through the same.
  • An advantage of the use of a plastic or polymeric material for the construction of the needle tip shielding device 100, in comparison to e.g. metal, is the greater freedom of variation of various details of the same.
  • a plastic needle tip shielding device 100 according to the invention may be more conveniently molded than the corresponding metallic article.
  • Another advantage includes the possibility to colour-code a plastic needle tip shielding device 100 according to the invention, for example according to the needle size.
  • Yet another advantage of a plastic or polymeric needle tip shielding device 100 according to the invention is the fact that the needle tip 304 may penetrate slightly into the corner 104 of the resilient arm 103.
  • the needle tip shielding device 100 is made of a thermoplastic polymer.
  • the needle tip shielding device 100 is made of a thermoplastic polymer comprising crystalline and amorphous alternating regions.
  • the needle tip shielding device 100 is made of a thermoplastic elastomer selected from the group consisting of a styrenic block copolymer, a polyolefinic mixture, an elastomeric alloy, a thermoplastic polyurethane, a thermoplastic copolyester, and a thermoplastic polyamide.
  • the back-hooking elongation 110 may comprise a groove with a partial circular shape, as well known in the art, provided and dimensioned to guide and allow the hollow needle 303 to slide thereon when withdrawn.
  • the resilient arm 103 may be dimensioned such that its most protruding part when being forced out of its resting position by the hollow needle 303 is in the range of 0.3 to 3 times the diameter of the front side 107, as measured from the attachment point 105.
  • the width and placement of the resilient arm 103 is such that no part of the resilient arm 103, or the back-hooking elongation 110, is brought in contact with the inner surface of the catheter hub 200 at any location of the hollow needle 303.
  • the width of the resilient arm 103 is in the range of 0.2 to 0.9 times the diameter of the front side 107 and selected such that it can not be bent aside to expose the needle tip 304 under normal circumstances.

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Hematology (AREA)
  • General Health & Medical Sciences (AREA)
  • Anesthesiology (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Veterinary Medicine (AREA)
  • Animal Behavior & Ethology (AREA)
  • Public Health (AREA)
  • Pulmonology (AREA)
  • Biophysics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Vascular Medicine (AREA)
  • Media Introduction/Drainage Providing Device (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)

Claims (8)

  1. Katheterinstrument (1000), umfassend eine Nadelspitzenabschirmvorrichtung (100), eine Nadel (303), eine Nadelträgereinheit und eine Kathetereinheit, wobei die Kathetereinheit eine Katheternabe (200) und einen Katheter (201) umfasst und die Nadelspitzenabschirmvorrichtung (100) und die Katheternabe (200) voneinander separierbar sind; wobei
    - die Nadel (303) eine Nadelspitze (304) umfasst;
    - die Katheternabe (200) umfasst: ein distales Ende der Katheternabe und ein proximales Ende der Katheternabe, wobei das distale Ende der Katheternabe den sich davon erstreckenden Katheter (201) aufweist, und eine Öffnung der Katheternabe, wobei die Öffnung der Katheternabe einen ringförmigen Raum der Katheternabe definiert;
    - die Nadelträgereinheit in die Nadelspitzenabschirmvorrichtung (100) integriert ist;
    - die Nadelträgereinheit ferner umfasst: ein distales Ende der Nadelträgereinheit und ein proximales Ende der Nadelträgereinheit, wobei das distale Ende der Nadelträgereinheit die sich davon erstreckende Nadel (303) aufweist;
    - so dass, wenn sich die Nadel (303) in der Bereitschaftsposition befindet, in der die Nadel (303) in den Katheter (201) ragt, die Nadel (303) teilweise innerhalb der Nadelspitzenabschirmvorrichtung (100) angeordnet und verschiebbar ist, wobei die Nadel (303) gleitend mit der Nadelträgereinheit in Eingriff steht;
    - so dass, wenn sich die Nadel (303) in einer vollständig eingefahrenen Position befindet, in der die Nadelspitze (304) vollständig aus dem Katheter (201) zurückgezogen wird, die Nadelspitzenabschirmvorrichtung (100) die Nadelspitze (304) distal abschirmt und - ein Stoppelement, das verhindert, dass sich die Nadelspitzenabschirmvorrichtung (100) in der vollständig eingefahrenen Position in Bezug auf die Nadel (303) distal bewegt;
    dadurch gekennzeichnet, dass
    - die Nadelspitzenabschirmvorrichtung (100) über mindestens eine Schnittstelle zwischen der Nadelspitzenabschirmvorrichtung (100) und der Kathetereinheit in der Bereitschaftsposition in Kontakt mit der Kathetereinheit gehalten wird;
    wobei eine Grenzfläche der Nadelspitzenabschirmvorrichtung (100) und eine Grenzfläche der Katheternabe (200) die mindestens eine Schnittstelle zwischen der Nadelspitzenabschirmvorrichtung (100) und der Kathetereinheit bilden,
    - die Nadelspitzenabschirmvorrichtung (100) aus einem ersten Polymermaterial besteht, sodass die Grenzfläche der Nadelspitzenabschirmvorrichtung (100) aus dem ersten Polymermaterial besteht, und die Katheternabe (200) aus einem zweiten Polymermaterial besteht, sodass die Grenzfläche der Katheternabe (200) aus dem zweiten Polymermaterial besteht, und
    wobei das erste Polymermaterial ein thermoplastisches Polymer ist, das kovalent gebundene O- oder S-Atome umfasst, und das zweite Polymermaterial Polypropylen, Polyethylen oder Propylen/Ethylen-Copolymer ist.
  2. Katheterinstrument (1000) nach Anspruch 1, wobei die Nadelspitzenabschirmvorrichtung (100) in dem ringförmigen Raum der Katheternabe (200) in der Bereitschaftsposition positioniert ist.
  3. Katheterinstrument (1000) nach einem der vorangehenden Ansprüche, wobei die Nadelspitzenabschirmvorrichtung (100) des Weiteren einen elastischen Vorspannungsabschnitt mit einer ersten Position und einer zweiten Position umfasst, wobei die erste Position dadurch gekennzeichnet ist, dass der elastische Vorspannungsabschnitt an dem Nadelschaft der Hohlnadel (303) in der Bereitschaftsposition anliegt und die zweite Position dadurch gekennzeichnet ist, dass der elastische Vorspannungsabschnitt die Nadelspitze (304) in der vollständig eingefahrenen Position abschirmt.
  4. Katheterinstrument (1000) nach Anspruch 3, wobei der elastische Vorspannungsabschnitt mindestens einen elastischen Arm (103) umfasst.
  5. Katheterinstrument (1000) nach einem der vorangehenden Ansprüche, wobei die Nadelspitzenabschirmvorrichtung (100) ein Loch (102) umfasst.
  6. Katheterinstrument (1000) nach einem der vorangehenden Ansprüche, wobei die mindestens eine Schnittstellenoberfläche der Nadelspitzenabschirmvorrichtung (100) mindestens einen Vorsprung (101) oder ein Reibungselement zum lösbaren Eingriff mit der Nadelspitzenabschirmvorrichtung (100) und der Katheternabe (200) umfasst.
  7. Katheterinstrument (1000) nach einem der vorangehenden Ansprüche, wobei das Stoppelement einen Aufweitungsbereich (305) auf der Nadel (303) in der Nähe der Nadelspitze (304) zum Eingriff mit der Nadelspitzenabschirmvorrichtung (100) oder der Nadelträgereinheit umfasst, wodurch eine distale Bewegung der Nadelspitzenabschirmvorrichtung (100) in Bezug auf die Nadel (303) verhindert wird.
  8. Katheterinstrument (1000) nach einem der vorangehenden Ansprüche, wobei das Stoppelement mindestens ein Reibungselement oder einen faltbaren Strang oder Streifen umfasst, der an seinem distalen Ende mit der Nadelspitzenabschirmvorrichtung (100) verbunden und an seinem proximalen Ende mit einer Nadeleinheit (300) verbunden ist, wobei die Länge des faltbaren Strangs oder Streifens geringer als die Länge der Nadel (303) ist.
EP11769171.7A 2010-04-13 2011-04-12 Abschirmvorrichtung für eine polymerkatheter-nadelspitze Active EP2558153B2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE1050360A SE535169C2 (sv) 2010-04-13 2010-04-13 Skyddsanordning av polymer för en kateternålspets
PCT/SE2011/050443 WO2011129753A1 (en) 2010-04-13 2011-04-12 Polymeric catheter needle tip shielding device

Publications (4)

Publication Number Publication Date
EP2558153A1 EP2558153A1 (de) 2013-02-20
EP2558153A4 EP2558153A4 (de) 2013-11-27
EP2558153B1 EP2558153B1 (de) 2019-12-25
EP2558153B2 true EP2558153B2 (de) 2025-08-20

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP11769171.7A Active EP2558153B2 (de) 2010-04-13 2011-04-12 Abschirmvorrichtung für eine polymerkatheter-nadelspitze

Country Status (13)

Country Link
US (1) US9522255B2 (de)
EP (1) EP2558153B2 (de)
JP (1) JP6147186B2 (de)
KR (1) KR101835711B1 (de)
CN (1) CN102958553B (de)
AU (1) AU2011241165B2 (de)
BR (1) BR112012026081B8 (de)
CA (1) CA2795034A1 (de)
ES (1) ES2776132T5 (de)
MX (1) MX2012011898A (de)
RU (1) RU2567592C2 (de)
SE (1) SE535169C2 (de)
WO (1) WO2011129753A1 (de)

Families Citing this family (26)

* Cited by examiner, † Cited by third party
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MX2012011898A (es) 2013-02-15
CA2795034A1 (en) 2011-10-20
EP2558153A1 (de) 2013-02-20
AU2011241165A1 (en) 2012-11-01
CN102958553B (zh) 2015-09-02
BR112012026081A2 (pt) 2016-06-28
RU2567592C2 (ru) 2015-11-10
JP2013523374A (ja) 2013-06-17
WO2011129753A1 (en) 2011-10-20
EP2558153B1 (de) 2019-12-25
RU2012141286A (ru) 2014-05-20
SE1050360A1 (sv) 2011-10-14
WO2011129753A9 (en) 2011-12-29
SE535169C2 (sv) 2012-05-08
US9522255B2 (en) 2016-12-20
ES2776132T5 (en) 2025-12-03
AU2011241165B2 (en) 2014-05-08
BR112012026081B8 (pt) 2022-08-23
JP6147186B2 (ja) 2017-06-14
CN102958553A (zh) 2013-03-06
KR20130086928A (ko) 2013-08-05
EP2558153A4 (de) 2013-11-27
ES2776132T3 (es) 2020-07-29
US20130030371A1 (en) 2013-01-31
BR112012026081B1 (pt) 2020-09-29

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